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Table 2 <br /> HISTORIC GROUNDWATER LEVELS AND CHEMICAL ANALYSIS RESULTS <br /> January 2000 Through July 2004 <br /> Former 76 Station 4409 <br /> Date TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments <br /> Sampled Elevation Water Thickness water in 8260E benzene Xylenes 8021E 8260E <br /> Elevation Elevation <br /> (feet) (feet) (feet) (feet) (feet) (µg/1) (µg11) (µg11) (µg11) (µg(1) (µg11) (µg11) (µg11) <br /> MW-1 (Screen Interval in feet 30 0-50 0) <br /> 04/10/00 1144 2481 000 -1337 -- ND -- ND ND ND ND ND ND <br /> 07/05/00 1144 2579 000 -1435 -098 ND -- ND ND ND ND ND ND <br /> 10/10/00 1144 2786 000 -1642 -- ND -- ND ND ND ND ND ND <br /> 01/22/01 1144 2767 000 -1623 0 19 ND ND ND ND ND ND ND <br /> 04/05/01 1144 27 10 000 -15 66 057 ND ND ND ND ND ND ND <br /> 07/05/01 1144 2906 000 -1662 -096 ND -- ND ND ND ND ND ND <br /> 10/10/01 1144 30 19 000 -1875 -2 13 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 <br /> 01/17/02 1144 2959 000 -18 15 060 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<l 0 <br /> 04/18/02 1144 2886 000 -1742 0 73 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<O 50 ND<5 0 ND<2 0 <br /> 07/11/02 1144 29 93 000 -1849 -107 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- 2 5 <br /> 11/14/02 1144 3271 000 -21 27 -278 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<1 0 - ND<2 0 <br /> 01/30/03 1144 3183 000 -2039 0 88 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<l 0 -- ND<2 0 <br /> 04/28/03 1144 3103 000 -1959 080 ND<50 -- ND<O 50 ND<O 50 ND<O 50 ND<1 0 -- 33 <br /> 07/28/03 1144 3254 000 -21 10 -151 -- -- -- -- -- - -- <br /> 10/08/03 11 44 3409 000 -2265 -155 ND<50 ND<O 50 ND<O 50 ND<O 50 1 3 -- 46 <br /> 01/12/04 1144 33 48 000 -2204 061 -- 100 ND<1 0 ND<I 0 ND<I 0 ND<2 0 -- 80 <br /> 04126/04 1144 3203 000 -2059 1 45 400 ND<2 5 ND<2 5 ND<2 5 ND<5 0 -- 430 <br /> 07/13/04 1144 3533 000 -23 89 -330 300 390 ND<2 5 ND<2 5 ND<2 5 ND<5 0 -- 580 <br /> MW-2 (Screen interval in feet 25 045 0) <br /> 01/05/00 1268 2970 000 -1702 -- ND -- ND ND ND ND - ND <br /> 04/10/00 1268 2736 000 -1468 234 ND -- ND ND ND ND ND ND <br /> 07/05/00 1268 2722 000 -1454 0 14 ND - ND ND ND ND ND ND <br /> 10/10/00 1268 2931 0 00 -1663 -- ND ND ND ND ND ND ND <br /> 01/22/01 1268 29 15 000 -1647 0 16 ND -- ND ND ND ND 3 28 ND <br /> 04/05/01 1268 2860 000 -1592 055 ND -- ND ND ND ND ND ND <br /> 4409 Page 1 of 7 <br />